diff --git a/libs/binder/include/binder/RpcServer.h b/libs/binder/include/binder/RpcServer.h
index aaa812b..6b31812 100644
--- a/libs/binder/include/binder/RpcServer.h
+++ b/libs/binder/include/binder/RpcServer.h
@@ -77,7 +77,7 @@
      * have
      */
     [[nodiscard]] status_t setupInetServer(const char* address, unsigned int port,
-                                           unsigned int* assignedPort);
+                                           unsigned int* assignedPort = nullptr);
 
     /**
      * If setup*Server has been successful, return true. Otherwise return false.